That date is Election Day in the U.S. 1/3 of the US Senate, the entire US House of Representatives, a slew of local and state races and ballot measures. Also, at the top of the ticket is the election of a new (or perhaps not) President.
This date has no bearing as most of these stocks will not be traded before November 3rd
What happens on Novdmber 3rd?
The United States presidential election is that day